* {
    margin: 0;
    padding: 0;
    /* 内减模式 */
    box-sizing: border-box;
}

body {
    background-color: #eff3f6;
}

.box {
    margin: 80px auto;
    width: 600px;
    height: 350px;
    background-color: #fff;
    border-radius: 5px;
}

.box .left {
    float: left;
    width: 300px;
    height: 350px;
    border-radius: 5px 0 0 5px;
    font-size: 12px;
    font-weight: bold;
    background-image: linear-gradient(#fff, #3b82ff);
}

.box .left .logo {
    width: 200px;
    margin: 40px auto;
}

.box .right {
    float: left;
    width: 300px;
    border-radius: 0 5px 5px 0;
}

.box .right h3 {
    padding-bottom: 40px;
}

.box .right .input {
    width: 200px;
    margin: 20px auto;
    outline:none;
}

.box .right .text {
    margin-bottom: 10px;
    width: 200px;
    height: 30px;
    border: 1px solid #e8e8e8;
}

input::placeholder {
    padding-left: 10px;
    color: #e8e8e8;
    opacity: 1;
}

.box .right select {
    width: 200px;
    height: 30px;
    font-size: 14px;
    border: 1px solid #e8e8e8;
}

.box .right .submit {
    margin-top: 20px;
    width: 200px;
    height: 30px;
    color: #fff;
    border-radius: 5px;
    border-style: none;
    background-color: #3b82ff;
}